A Multi-Specialist Stacking Decoder of Cognitive Workload and a Decomposition of the Limits of Cross-Dataset Transfer in Electroencephalography
Sugeng Rifqi Mubaroq1,*, Rolly Maulana Awangga2, Tegar Ditya Pragama1, Sidiq Fathummubin3, Ali Yusuf Abdulhaq1
Intelligent Automation & Soft Computing, Vol.41, pp. 27-46, 2026, DOI:10.32604/iasc.2026.088039
- 11 August 2026
Abstract Decoding cognitive workload from electroencephalography (EEG) underpins passive brain–computer interfaces and adaptive learning technology, yet practical decoders share two weaknesses: they rely on a single family of features, and their accuracy collapses on recordings from an unfamiliar device, montage, or task. We address both. We first build a multi-specialist stacking decoder that fuses complementary spectral, Riemannian, and spatial views through a meta-learner. Evaluated across two public corpora under the leave-one-subject-out MOABB benchmarking protocol, it outperforms the best single specialist on the binary workload contrasts, and the strongest of these effects survives family-wide false-discovery-rate correction. The… More >